Cylinder cock for locomotives



Jan. 6. 1925. 1,522,444

E. G. v@Ross CYLINDER COCK FO LOCOMOTIVES Original Filed July 27, 1920 Patented Jan. 6, 1925.

UNITED STATES l 1,522,4nt

Parana erica.

`llDVAIR'D Gr. GROSS, OF BEONTGDMERY, ALABAMA, ASSIGNOR F ONE-FGBJTH TO JOHN i F. RYAN AND ONE-FOURTH TG HENRY CYLINDER ,f 000K Continuation of application SyeralNo. 399,549, nic-,d July 27, 1920.

serial no. staf/ic.

17o @ZZ wiz-am t concern Be it known that I, EDWARD G. Gaoss, a

Citizen of the United States, residing at Montgomery, in the county of Montgomery andV Statev of Alabama, have invented certain new and useful vImprovements in Cylinder Cocks for Locomotives, of which the following is a specification.

This application is a continuation of my co-pending application, Serial Number 399,349, iiled July 27th, 1920.

rThe invention has for an object to effect improvements in cylinder cocks for locomotives, aiming especially to simplify construction, while at the same time improving the functions and attaining new results of importance in such devices.

Another aim is to present a. valvel which will not project a `iet of-steamto a considerable distance or against the roadway, yet

will avoid impedance of the exhaust through the valve. It is another important aim of the invention to effect proper limitations of movement of the parts in an efficient man- 1161'.

Additional objects, advantages and features of invention will appear from the construction, arrangement and combination of parts hereinafter set forth and shown in the drawings, wherein,-

Figure 1 is a longitudinal sectional view of a valve constructed in accordance with my invention,

Fig. 2 is a detail of the valve,

Fig. 3 is a bottom view of the device,

Fig. 4 is a top view of the base element of the casing.

There is illustrated a valve including a case having an upper part 10 including a rectangular central portion 11 from which there extends an integral nipple 12 having tapered external threads adapted to be screwed into a tapping such as is usually provided on the under side of steam locomotive cylinders. Below the part 11 the case member 10 is enlarged and provided with a horizontal circular flange 13, an exteriorly threaded wall 14 of smaller diameter being projected concentrically therefrom a short distance. The portion 14 is about twice the diameter of the nipple 12, though the proportions may be varied as desired. The structure permits the body to be formed of D. SP'KS, ESTE-I OF ATLANTA, GEORGA.

FOR LOCOIJIGTIVES.

This application filed July 22, .1922.

quite large proportions, however, relatively to the nipple. A kpassage 15 is vformed through the nipple 12, and continued downwardly through the part 10 of the oase, flared as indicated at 16. A lower case body 17 is provided, having a cylindrical wall interiorly threaded to screnY snugly upon the wall 14, the outer end of the wall and the abutting face of the flange 13 being ground to a snug fit. A short distance below the wall 14, the lower body 17 of the case is formed with a floor 19, in which there is formed a central large aperture surrounded by an exterior' boss 21, in which there is ftted the stem base 22 of a valve 23 in the shape of a disk, set snugly on the floor 19 and fitting the sides of the recess and having a plurality of port openings 24 therethrough, three being shown in the present instance. The case has ports 25 similarly spaced and of the same size formed in the ioor 19. The stem of the valve is provided with a rectangular portion 26 immediately outward of the part 22, and a terminal reduced threaded part 27 receiving a nut 28 by which an operating lever 29 is secured to the valve. The lever 29 is provided with a circular baffie head 30 at its inner end, tapered to a thin lateral edge, the upper side sloping downwardly and outwardly to afford an increasing clearance from the port outwardly and to save material, being provided with a central rectangular aperture 31 receiving snugly the rectangular portion 26 of the valve stem. Encircling the boss 21 there is a helical spring 21a of a suitable strength to bear downwardly upon the head 30, thereby holding the valve 23 firmly seated. The lower case body 17 is provided with strike lugs 32 extendingl radially therefrom adjacent one side, and the lever 29 is provided with a lug 33 on its upper side arranged to move closely beside the case for engagement with the lugs 32 at opposite limits of move ment of the lever. The lugs 32 and 33 are so positioned that movement of the lever in one direction will be checked with the ports of the valve and case in registration, while movement in the opposite direction will be checked with the ports of the valve and case in closed relation.

It should be noted that the valve and casing ports may be made quite large, so as to the cylinder and projecting a much llesse:

distance therebelow than necessary in cocks heretofore employed in such situations. If desired, to obviate liability of loosening of the lower case member 17 by engagement o the operating lever with one of the lugs 32, a set screw i0 may be engaged through the upper and lower case members, tor instance, as shown in Fig. 1. Y

It is an advantage of "the invention that only one-sixth of a turn of the valve or less is required to move it from full closed position to full open position, or vice versa. The parts are adapted to be constructed readily by ordinary methods or shop practice, requiring no special machinery differ ing from that already available in the better shops. 1

In practice of my invention, it has been found that in the use of the spring 21, the valve 23 is held firmly seated while an engine is drifting, thus preventing ingress of cold air to the cylinder, which is a very important and desirable feature on superheater engines.

What is claimed v 1. A valve comprising a case having an inlet fitting and having a discharge port, a valve in the case movable to open and close Vthe port, and having a stem projected there from, an operating lever on the stem, said lever having an enlarged bafile head extending beyond a projection of the port above mentioned and spaced close to the case, ier the purposes described. f

2. A cock of the character described com prising an upper case body having a thread-v ed nipple for engagement incylinder tappings, ay lower case portion engaged upon the body, including also a ported bottom having a central axial bearing opening, va valve correspondingly ported snugly iitted revolubly in the recess and having a steni engaged in said bearing opening and'projected therebeyond, anoperating lever-,on n

the stem, said case having'radial lugs thereon, and said lever having a baffle head under the ports and a lug movable between the first named lugs to limit operation of the valve as described. Y f Y 'i In testimony whereof I have affixed my signature in presence of two witnesses. K

EDWARD G. GROSS.V

Witnesses a HC. B. DINKINS,

I-I. A. CLENNEY. 

